Lighting fixture

ABSTRACT

A multilamp outdoor lighting luminaire in which the major components thereof are organized about a substantially cylindrical, extruded center post and the auxiliary equipment associated with each light source is mounted on a power tray slidably supported on the center post.

United States Patent [7 2 1 Inventors Hendrik A. J. De Vos Wenham; Thomas Haraden, Ipswich, Mass. [21 Appl. No. 679,758 [22] Filed Nov. 1, 1967 [45] Patented May 18, 1971 [73] Assignee Sylvania Electric Products Inc.

[54] LIGHTING FIXTURE 3 Claims, 3 Drawing Figs. [52] [1.8. CI 240/3, 240/25, 240/64, 240/67 [51] Int. Cl F2lv 21/00 [50] Field of Search 240/3, 25, 64, 65, 67, 68, 2; 174/45 [5 6] References Cited UNITED STATES PATENTS 3,030,735 4/1962 Bodkins 2,51 1,440 6/1950 Long 240/25X 3,399,856 9/1968 240/67X FOREIGN PATENTS 1,187,731 2/1965 Germany 240/25 Primary Examiner-John M. Horan Assistant Examiner-Alan Mathews Attorneys-Norman J. OMalley and Joseph C. Ryan ABSTRACT: A multilamp outdoor lighting luminaire in which the major components thereof are organized about a substantially cylindrical, extruded center post and the auxiliary equipment associated with each light source is mounted on a power tray slidably supported on the center post.

PaLterited Ma 18, 1971 3,578,963

2 Sheets-Sheet 1 l Elm}: I if a INVENTOR'S HENDRIK A.J. de vos THOMAS HgB/AEN BY Patented May 18, 1971 2 Sheets-Sheet 2 HENDRIK A J de vos THOMAS HARADEN INVENTORS BY 6% A TORNE LIGHTING FIXTURE This invention relates to outdoor lighting equipment,-and more particularly to luminaires having lamps which require relatively heavy auxiliary electrical equipment for their operation.

Shopping centers, commercial and industrial parking areas, car lots, malls, parks and the like all require high levels of illumination combined with modern luminaire design. Both aesthetic and practical considerations dictate the use of a.

minimum number of luminaires and pole assemblies to provide a cleaner,'more appealing area and to make possible greater freedom and flexibility in the use of the area being illuminated. To meet the foregoing considerations and at the same time provide a'satisfactory illumination level requires the use of several light sources with each luminaire. Since each lamp or light source requires its own auxiliary equipment, it is apparent that these modern luminaires are quite large and quite heavy compared to the luminaires of only a few yearsago. Thus significant installation and maintenance problems are presented. v

In view of the foregoing, one of the principal objects of this invention is to minimize the installation and maintenance problems associated with multilamp outdoor lighting luminaires.

Another object is to provide a multilamp, outdoor lighting luminaire with a readily accessible compartment within which the auxiliary equipment for each lamp is'disposed.

A further object is to provide a novel mounting arrangement for the auxiliary equipment whereby access thereto for servicing or removal for replacement can be readily accomplished.

F urtherobjects, advantages and features are attained, in accordance with the principles of this invention by organizing the several auxiliary equipment assemblies about an extruded center post which fits over the pole on which the luminaire is supported and to which it is secured. The auxiliary equipment for each lamp is mounted on a power tray which is slidable on the center post into and out of operative position and is readily removable.

In the specific embodiment of the invention illustrated in the accompanying drawing, FIG. I is a side elevational view partly in section of a multilamp outdoor lighting luminaire.

FIG. 2 is a plan view, on an enlarged scale and in section, taken along the line 2-2 of FIG. 1.

FIG. 3 is a side elevational detail on an enlarged scale of a length of pole on which the luminaire of FIGS. 1 and 2 is supported, showing particularly the power tray on which the auxiliary equipment for each lamp is supported.

Referring now to the drawings, particularly FIGS. 1 and 2 thereof, the basic member of the luminaire is a substantially cylindrical, extruded center post 2 which fits over the pole 4 on which it is mounted and is secured thereto by four screws 6. A base casting 8 is supported from the center post 2 by casting supports 10. The base casting 8 is provided with a cover 12 removably supported therein. A canopy 14, having a lifting eye 15, is mounted on one end of canopy supports 16, the other ends thereof being secured to the base casting 8. Windows 18 for access to lamps 20 are set in the canopy supports I 16. Lamps 20 are screwed into sockets 22 mounted on socket brackets 24 attached to the center post 2. Each lamp 20 is provided with its own reflector 26 mounted on a reflector bracket (not shown) which is attached to the center post 2.

- A power tray- 28 having a ballast 30 and a capacitor 32 secured to the front face thereof has tracks 34 formed on the rear face thereof which ride in channels 36 provided therefor in the cylindrical center post 2. As shown in the drawings, there are four of these power trays 28, one for each of the four lamps with which the luminaire is provided. The power trays 28 are secured to support brackets 28 which are secured to the cylindrical center post 2 near the lower end thereof. As may be noted particularly in FIG. 2 each of the four support brackets 38 has a central tab portion a, through which one of the screws 6 extends. Thus screws 6 secure the support brackets 38 to the center post 2 and the center 0st in turn to the pole 4. Each support bracket 38 has a pair 0 offset wings b and c, one of which has a screw hole therein. There is a wing screw 40 set in the lower'end of the power tray 28. Thus when the power tray 28 has been advanced on its tracks 34 within the channels 36 in the center post 2 so that the wing screw 40 is lined up with the screw hole in one of the wings of the support bracket, .the power tray 28 is locked to the support bracket 38 by the wing screw 40. With the power tray 28 now supported in position on the center post 2 on the pole 4, relatively simple wiring connections which form no part of this invention may then be completed.

Lowering of the power tray 28 on the center post 2 to make it readily accessible for on-the-spot maintenance as well as complete removal of the unit for replacement may be accomplished quite quickly and easily. The wing screw 40 is backed off sufficiently to disengage it from the offset wing of the support bracket 38, thus permitting the tray to drop. A bail 42 is secured to the tray 28 at the top thereof. Thus, as the tray drops and the upper end thereof approaches the lower end of the center post 2, the bail 42 encounters adjoining offset wings of adjoining support brackets 38 so that the tray now hangs from the bail on these wings. In this position it is readily accessible for inspection and on-the-spot maintenance. If, on the other hand, replacement of the unit is desired, all that is necessary is to disconnect the wiring and then disengage the bail 42 from the wings of the adjacent support brackets 38, the bail 42 then serving as a handle for carrying the power tray.

We claim:

I. A luminaire comprising:

a substantially cylindrical center post;

a plurality of power trays slidable on said center post;

means for supporting said power trays from said center post in a first position;

means for supporting said power trays from said center post in a second position;

and a support bracket secured to said center post near the lower end thereof and between each of said power trays, each of said support brackets having a pair of offset wings, the adjacent wings of adjacent support brackets defining the means for supporting in said second position the power tray disposed therebetween.

2. The combination of claim 1 and a plurality of lamps supported from said center post and a plurality of reflectors supported from said center post.

3. The combination of claim 2 and an enclosure within which said power trays, lamps and reflectors are disposed, said enclosure having a removable cover in the base portion thereof whereby access may be had to said power trays. 

1. A luminaire comprising: a substantially cylindrical center post; a plurality of power trays slidable on said center post; means for supporting said power trays from said center post in a first position; means for supporting said power trays from said center post in a second position; and a support bracket secured to said center post near the lower end thereof and between each of said power trays, each of said support brackets having a pair of offset wings, the adjacent wings of adjacent support brackets defining the means for supporting in said second position the power tray disposed therebetween.
 2. The combination of claim 1 and a plurality of lamps supported from said center post and a plurality of reflectors supported from said center post.
 3. The combination of claim 2 and an enclosure within which said power trays, lamps and reflectors are disposed, said enclosure having a removable cover in the base portion thereof whereby access may be had to said power trays. 